Tory MP Nicky Morgan has called for pollsters to be banned from selling data before it is made public

The former Cabinet Minister – now chair of the Treasury Select Committee – said it appeared hedge funds made a small fortune from being given information by pollsters before exit polls were published on Referendum night.

Some gained from a stunning rise in the Pound sparked by inaccurate claims Remain would win.

Others benefited from more accurate information that Leave had won – allowing them to ‘short’ the Pound before others.

Damian Lyons Lowe – head of Survation – is thought to have sold a private poll predicting Leave to multiple clients.